CN-115690349-B - Three-dimensional river channel model construction method, system and storage medium for earthquake simulation

CN115690349BCN 115690349 BCN115690349 BCN 115690349BCN-115690349-B

Abstract

The invention relates to a method, a system and a storage medium for constructing a three-dimensional river model for earthquake simulation, which comprise the steps of setting the length, width and height of the three-dimensional river model, and setting a displayed plane range according to the length, width and height; setting the number of layer interfaces contained in the three-dimensional river channel model, performing adjustment control operation on all the interface layers in a plane range, setting river channel names, obtaining a central control point plane distribution diagram, obtaining a primary and secondary river channel connection diagram based on the central control point plane distribution diagram so as to generate a river channel depth plane diagram, and selecting the interface layers and the river channels to obtain three-dimensional display diagrams of the interface layers and the river channels. The method can establish any diversified three-dimensional river channel, provides various three-dimensional river channel big data for the intelligent river channel identification method, and is beneficial to improving the adaptability of the intelligent river channel identification method. The invention can be applied in the field of reservoir geophysics.

Inventors

WANG JIANHUA
JING YONGQUAN
BAO XIANGSHENG
WANG QINGZHEN
NIU CONG
LING YUN
CHEN JIANJUN
WANG DI
YE YUNFEI
WANG XIAOJIANG

Assignees

中海石油(中国)有限公司
中海石油（中国）有限公司北京研究中心

Dates

Publication Date: 20260505
Application Date: 20221117

Claims (6)

1. The three-dimensional river channel model construction method for earthquake simulation is characterized by comprising the following steps of: Setting the length, width and height of a three-dimensional river model and setting the plane range of display according to the length, width and height, wherein the plane range of control point generation display is set to be P 1 , the plane range of control point depth display is set to be P 2 , the plane range of interpolation of a display layer and a river channel is set to be P 3 , and the three-dimensional display plane of the layer and the river channel is set to be represented by P 0 ; setting the number of layer interfaces contained in the three-dimensional river channel model, and performing adjustment control operation on all interface layers in a plane range, wherein the adjustment control operation comprises the steps of setting control points for the layer interface with the sequence number i, and controlling the layer interface with the sequence number i in an equidistant mode in the x direction and the y direction; The control of the x direction and the y direction is performed in an equidistant manner, which comprises that the control points in the x direction and the y direction are respectively 、 Based on a preset control rule, a control point distribution map is generated on a plane P 1 ; The control point depth of the layer interface with the sequence number i is adjusted by displaying control points with the same y coordinates on a plane P 2 graph each time, then modifying the depth by using a man-machine interaction mode, and sequentially modifying the depths of the control points with other y coordinates until all modifications are complete; Setting a river channel name, acquiring a central control point plane distribution diagram, and acquiring a primary and secondary river channel connection diagram based on the central control point plane distribution diagram so as to generate a river channel depth plane diagram; And selecting the interface layer and the river channel to obtain a three-dimensional display diagram of the interface layer and the river channel.
2. The method for constructing a three-dimensional river model for seismic simulation according to claim 1, wherein said setting a river name and obtaining a central control point plane distribution map comprises: assuming that the River channel name is River, selecting a control layer position where the River channel is located and setting the number of stages of the River channel, and assuming that the number of stages is m; and (3) setting the branch river channels of the number m respectively, and generating a central control point plane distribution map of the primary river channel and the secondary river channel in a plane P 1 .
3. The method for constructing a three-dimensional river model for seismic simulation of claim 1, wherein the generating a river depth plan comprises: Connecting the central control points of the primary and secondary river channels to obtain a primary and secondary river channel connection diagram; modifying the depth of a primary river and a secondary river on a primary river and secondary river connection diagram, selecting the names of the primary river and the secondary river, and modifying the depth of a river control point in a plane P 2 diagram; And setting the width range of each control point, obtaining a river boundary based on the river center control point and the width of the control point, and generating a river depth plane graph in the plane P 3 .
4. A three-dimensional river model construction system for seismic simulation for realizing the three-dimensional river model construction method for seismic simulation according to any one of claims 1 to 3, comprising: The first processing module is used for setting the length, width and height of the three-dimensional river model and setting the displayed plane range according to the length, width and height; The second processing module is used for setting the number of layer interfaces contained in the three-dimensional river channel model and carrying out adjustment control operation on all the interface layers in a plane range; the third processing module is used for setting river names, acquiring a central control point plane distribution diagram, and acquiring a primary and secondary river connection diagram based on the central control point plane distribution diagram so as to generate a river depth plane diagram; and the three-dimensional display module is used for selecting the interface layer and the river channel to obtain a three-dimensional display diagram of the interface layer and the river channel.
5. A computer readable storage medium storing one or more programs, wherein the one or more programs comprise instructions, which when executed by a computing device, cause the computing device to perform any of the methods of claims 1-3.
6. A computing device comprising one or more processors, memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing any of the methods of claims 1-3.

Description

Three-dimensional river channel model construction method, system and storage medium for earthquake simulation Technical Field The invention relates to the technical field of reservoir geophysics, in particular to a three-dimensional river channel model construction method, system and storage medium for seismic simulation. Background The river channel sedimentary reservoirs are main oil-gas polymer sites at home and abroad, most of river channel related oil-gas reservoirs with obvious seismic characteristics are basically found at present, the rest of the river channel related oil-gas reservoirs are oil-gas reservoirs with unobvious seismic characteristics and difficult to find, the oil-gas reservoirs are found more and more difficult and higher in risk, and in order to reduce exploration risks, the seismic characteristics of river channel oil-gas reservoirs with different conditions are required to be researched so as to form a specific seismic interpretation technology and promote the discovery of the river channel related oil-gas reservoirs. To understand the performance characteristics of the river reservoirs in different situations, a certain river modeling construction method needs to be formed, so that various river models can be built, and basic data are provided for the research of the performance characteristics of the river reservoirs in different river channels. The river channel model building method comprises two-dimensional river channel model building and three-dimensional river channel model building at present. The method mainly relates to river channel model construction along the ancient river channel direction and the river channel direction perpendicular to the river channel direction, and utilizes different mathematical methods to fit a river channel interface, such as a unitary three-point non-integration interpolation method, a least square curve fitting method, a smooth non-equidistant interpolation method and the like. Aiming at three-dimensional river channel model construction, a two-dimensional curved surface is mainly constructed based on known data at present, then a three-dimensional river channel is formed based on two-dimensional curve construction, for example, a river channel terrain model construction method disclosed in the prior art is used for constructing a river channel based on known river channel boundary data and key section data, a river phase three-dimensional sedimentary facies model deterministic modeling method in the prior art is used for realizing river channel construction based on relevant boundary data of river channel phases obtained from an actual digital sedimentary facies diagram, a river channel three-dimensional modeling method based on multi-attribute super-voxel map cutting in the prior art is used for improving the problem of insufficient river channel characterization based on single seismic attribute, and a multi-attribute fusion method based on improved local linear embedding is provided, so that the three-dimensional river channel modeling effect is improved. Compared with forward simulation research of a two-dimensional river model, forward simulation research of a three-dimensional river model is more beneficial to the research of river seismic characteristics, and a river identification method can be well established on the basis of seismic characteristic recognition. However, the current three-dimensional river model construction method mainly uses river boundary data determined by known data of one region to control river model construction, the model formed by the method is relatively mechanical and has no diversity, and the intelligent river identification method formed on the basis is difficult to have great popularization value in other regions. Disclosure of Invention In view of the above problems, the present invention aims to provide a three-dimensional river model construction method, system and storage medium for seismic simulation, which can build arbitrary diversified three-dimensional river, provide various three-dimensional river big data for intelligent river identification method, and facilitate improving adaptability of intelligent river identification method. The method for constructing the three-dimensional river model for earthquake simulation comprises the following steps of setting the length, width and height of the three-dimensional river model, setting the plane range of display according to the length, width and height, setting the number of layer interfaces contained in the three-dimensional river model, adjusting and controlling all interface layers in the plane range, setting river names, obtaining a central control point plane distribution diagram, obtaining a primary river connection diagram and a secondary river connection diagram based on the central control point plane distribution diagram, and selecting the interface layers and the river to obtain three-dimensional display diagrams of the interface la